3. You Don't Have Sex -- Ever

Every couple’s sex life gets stale. Even if you try, or say you’ll try, to keep things new and exciting it all just becomes routine. She’s noticed the routine and has tried to do things about it — those mentions of weekend trips out of town or couples massages were clues — were hints that not only is the relationship suffering, but the sex needs a spark. Unless you make a concerted attempt to bring back the magic in the sack, she’s going to move on. Have an open discussion about sex before it’s too late.